What are the purpose of the cytoplasms

It is made up of mostly water and salt. Cytoplasm is present within the cell membrane of all cell types and contains all organells and cell parts. Cytoplasm has various functions in the cell. Cytoplasm is responsible for giving a cell its shape. It helps to fill out the cell and keeps organelles in their place.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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there really is life in the deepest part